translation update

inc/lang/pt/conflict.txt

inc/lang/pt/denied.txt

inc/lang/pt/lang.php

inc/lang/pt/resetpwd.txt

lib/plugins/authad/lang/pt/settings.php

lib/plugins/authldap/lang/pt/settings.php

lib/plugins/authmysql/lang/pt/settings.php

lib/plugins/authpgsql/lang/pt/settings.php

lib/plugins/extension/lang/pt/intro_install.txt

lib/plugins/extension/lang/pt/intro_plugins.txt

lib/plugins/extension/lang/pt/intro_search.txt

lib/plugins/extension/lang/pt/intro_templates.txt

lib/plugins/extension/lang/pt/lang.php

lib/plugins/usermanager/lang/pt/lang.php